[Bug] 热力图对于空数据的表现不一致

[Cenmingyang]

Version

6.0.0

Link to Minimal Reproduction

https://codepen.io/gicocqqo-the-lessful/pen/OPMVYzw

Steps to Reproduce

1-9
2-9
的数据都是空，但是在图表上的表现不一样，一个有背景色，一个无背景色

Current Behavior

在进行热力图开发时遇到的问题

Expected Behavior

应该表现一致

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response

[echarts-bot]

@Cenmingyang It seems you are not using English, I've helped translate the content automatically. To make your issue understood by more people and get helped, we'd like to suggest using English next time. 🤗

TRANSLATED

TITLE

[Bug] The heatmap performs inconsistently with empty data.

BODY

Version6.0.0### Link to Minimal Reproductionhttps://codepen.io/gicocqqo-the-lessful/pen/OPMVYzw### Steps to Reproduce1-92-9The data is empty, but the performance on the chart is different; one has a background color and one does not.### Current BehaviorThe issue encountered during the development of the heat map.### Expected BehaviorThe performance should be consistent.### Environmentmarkdown- OS:- Browser:- Framework:### Any additional comments?No response

[helgasoft]

remove splitArea from axes ?
📌 please close issue if problem solved

[Cenmingyang]

It can solve the problem, but I’d prefer to add splitArea, and I hope their behavior can be consistent.

[helgasoft]

It appears to be a bug in splitArea. Workaround is to set areaStyle:{opacity:0.99} in xAxis.splitArea.

[plainheart]

I don't think this is a bug since the documentation says:

yAxis.splitArea.areaStyle.color = ['rgba(250,250,250,0.3)','rgba(200,200,200,0.3)']

Color of split area. SplitArea color could also be set in color array, which the split lines would take as their colors in turns. Dark and light colors in turns are used by default.

[helgasoft]

yes, explicitly setting areaStyle.color fixes it, but OP was relying on the default color setting with splitArea: {show: true}.
Demo
Similar issue reported already in #20634. Their example is with custom areaStyle.color and still shows the same problem in the upper left corner - Demo

[plainheart]

@helgasoft Thanks for your information. It should be a bug, as I can see the different behavior between SVG renderer and Canvas renderer in your demo.